Filler composition

Abstract

A filler composition comprising one or more ester-containing compounds and one or more ether-containing compounds.

I claim: 
     
       1. A casting formulation comprising a filler composition and a resin system,
 said filler composition comprising: a plurality of particles; 
 castor oil, wherein said castor oil is present at about 1 weight percent based upon the weight of said resin system; 
 a silicone glycol copolymer, wherein said silicone glycol copolymer is present at between 0.25 weight percent to 1 weight percent based upon the weight of said resin system; 
 
       and
 said resin system comprising between 55 to 70 volume percent of the casting formulation; 
 said filler composition comprising between 30 volume percent to 45 volume percent of said casting formulation; and 
 wherein said resin system and filler composition are mixed to form a reaction mixture, with the reaction mixture entraining ambient air to produce a high viscosity, liquid foam; 
 the presence of the castor oil resulting in generation of said foam; 
 the presence of the silicone glycol copolymer stabilizing said foam. 
 
     
     
       2. The casting formulation of  claim 1 , wherein:
 said castor oil in combination with said silicone glycol copolymer comprise a liquid mixture; 
 said liquid mixture is dispersed throughout said plurality of particles. 
 
     
     
       3. The casting formulation of  claim 1 , wherein said plurality of particles of the filler composition comprise calcium carbonate. 
     
     
       4. The casting formulation of  claim 1 , wherein said plurality of particles of the filler composition comprise gypsum. 
     
     
       5. The casting formulation of  claim 1 , wherein said plurality of particles of the filler composition comprise a plurality of microspheres. 
     
     
       6. The casting formulation of  claim 5 , wherein said plurality of microspheres is formed from one or more polymeric materials. 
     
     
       7. The casting formulation of  claim 5 , wherein said plurality of microspheres is formed from glass.